Repopulating my name list - suggestions?

I've recently fallen in the love with the name Calvin, which may or may not have something to do with my rereading of the Time Quintet. The problem is that Calvin goes with nothing on my original list, and over the past week or two I've tossed aside the entire list in hopes of finding some viable sibling names. Nothing works. Nothing feels right. They're all either too old-fashioned or too modern or just don't sound like siblings.
So what I'm asking is this: can you think of any names that go with Calvin? Middle names, sibling names, anything. Seriously. Any answer would be of tremendous help.

My suggestion would be look back at the social security data for when that name was at its peak and check out the other names around it. You can also work backward from nick names. Do you like Cal as a nn? Other similar nns would be Ned, Sam, Ted, Bo, etc. I think there's a list or blog post about vintage nick names that might give you some ideas for full name options.

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Mommy to Everett Callan, born 2010 and Callie Sage Eilonwy, born 2013
and 2 fur babies: a male standard poodle named Shasta, and a female Australian shepherd named Scout.

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